<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        p{
            color: red;
        }
    </style>
</head>
<body>
    <form action="/form" method="POST">
        <h3>请登录</h3>
        <input type="text" name="name" placeholder="请输入账号">
        <input type="password" name="pass" placeholder="请输入密码">
        <input type="submit" value="登录">
        <p>{{qing}}</p>
    </form>
</body>
</html>